Mobile Station Burst Signal Relay Selection
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Solution Overview
Problem
Conventional cellular networks face challenges in efficiently selecting the most suitable relay station for high data rate communications between mobile stations and base stations, leading to excessive transmit power requirements and increased costs due to the need for additional base station equipment and real estate, especially in next-generation cellular systems.
Innovation Solution
A method where the mobile station broadcasts a burst signal that is received by multiple relay stations, allowing them to measure the quality of reception and report back to the base station, which then selects the optimal relay station for establishing a high-rate connection, thereby reducing the need for continuous broadcast control channels and minimizing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cell splitting is applied to reduce mobile station-base station distance, then data rate is improved, but system cost increases due to additional base station equipment and real estate requirements
Solution Approach 1:
The patent segments the base station functionality by introducing relay stations that handle specific relay communication tasks. Instead of deploying fully functional base stations everywhere, the system divides roles between base stations (core functionality) and relay stations (signal relaying), reducing the need for expensive base station equipment while maintaining high data rates through optimized signal paths.
Solution Approach 2:
The patent introduces relay stations as intermediary elements between base stations and mobile stations. These relay stations receive signals from base stations and forward them to mobile stations, enabling high data rate communication without requiring direct line-of-sight or proximity to base stations, thus avoiding the need for costly base station deployment in every location.
2Power
If relay stations are deployed to reduce distance between mobile terminal and base station, then received power is improved, but signaling load increases due to continuous broadcast control channels
Solution Approach 1:
The patent implements periodic measurement and reporting mechanisms where mobile stations periodically measure signal quality from relay stations and report back to base stations. This periodic action replaces continuous broadcast control channels, reducing signaling load while still enabling effective relay station selection and power optimization at regular intervals.
Solution Approach 2:
The patent enables mobile stations to autonomously measure and evaluate signal quality from multiple relay stations using downlink pilot signals. The mobile station self-determines the best relay station without requiring continuous control channel broadcasts, reducing overall system signaling load while maintaining optimal power reception.
3Reliability
If multiple relay stations are used for signal relaying, then communication reliability is improved, but selection complexity increases without efficient measurement procedures
Solution Approach 1:
The patent implements feedback mechanisms where mobile stations measure signal quality from multiple relay stations using downlink pilot signals and report measurements back to the base station. The base station uses this feedback to intelligently select the optimal relay station, managing selection complexity through structured feedback loops while maintaining high communication reliability through diverse relay options.
Solution Approach 2:
The patent replaces complex mechanical/algorithmic relay station selection processes with signal-based measurement procedures. Mobile stations use downlink pilot signals to measure quality metrics, and the base station makes selection decisions based on reported measurements, substituting complex selection logic with straightforward signal quality comparison while maintaining reliability through multiple measured options.
Data Source
AI summary
A mobile station is operated in a telecommunications system that includes a base station and one or more relay stations. The mobile station communicates directly with the base station via a first channel. To facilitate selection of a suitable relay station, the mobile station broadcasts a burst for receipt by a plurality of relay stations. Relay stations each measure a quality of the received burst and communicate this information to the base station, which uses the information to select a most suitable one of the relay stations for use in carrying on indirect communications between the base station and the mobile station.